GB 31145-2014Safety of woodworking machines - Circular saw benches/up-cutting cross-cut sawing machines (English PDF)

3.2 Definition 2

3.2.2 Feed table infeedtable Machine Tool Feed when another table for. Vertical

a) table sectional support guide plate for the auxiliary feeding machine longitudinal sectional time; Mobile

b) cross-section for the saw unit at a fixed position of the table; C) When used as an upper-cut cross-section, the work of auxiliary support.

3.2.3 The operator's position operatorposition When the machine for transverse or longitudinal section mode, the operator uses the region, according to the region shown in Figure 5. Explanation. 1

--- discharge table; 2

--- feed table; 3

--- workpiece; 4

--- for longitudinal and cross-sectional area transverse mode operation. Figure 5 the operator's position

3.2.4 Movable machine displaceablemachine The machine is placed on the ground, the use of stationary, it is equipped with a mobile device to make the machine between place, the device is usually wheel.

3.2.5 Mechanical actuator mechanism machineactuator [GB 5226.1-2008, the definition 3.34]

3.2.6 Manual feed handfeed [GB 12557-2010, the definition 3.3].

3.2.7 Detachable motorized feed device demountablepowerfeedunit [GB 12557-2010, the definition 3.4].

3.2.8 Projectile ejection [GB 12557-2010, the definition 3.11].

3.2.9 Kickback kickback [GB 12557-2010, the definition 3.12].

3.2.10 Non-return device anti-kickbackdevice [GB 12557-2010, the definition 3.13].

4.1 Noise generated by the danger. Laser 5.4.13 5.1

5.2 When the machining, materials and substances used or discharged dangers arising, for example. Due to the risk of contact or inhalation of harmful fluids, gases, fumes and dust caused Fire danger 5.4.3 5.4.1,5.4.3,6.3 6.1 6.2 6.3 6.4 6.5

6.6 Mechanical design ignored the danger to humanity learn the principles of ergonomics to produce. Unhealthy posture or excessive force Inappropriate consider a human arm or leg foot structure Inappropriate lighting Face Human error, human behavior Manual control of the design, location or identification methods Design or location of visual display device 5.2.2 5.2.2 6.3 6.3 5.2.2 5.2.2 7 various dangerous combination 5.2.5 8.1 8.2 8.3

8.4 Because of unexpected start, accidental over-current, over-speed accidents (or any other similar faults) generated hazardous. Failure of the control system/fault Recovery of energy supply after the interruption External influences electrical equipment Operating error (due to mechanical features and capabilities do not match, see 8.6) 5.2.1 5.2.6,5.2.5,5.4.7 5.2.1,5.4.4,5.4.12 5.2.1,5.4.5,

5.2.1 Safety and reliability of control systems

5.2.1.1 General requirements Of this standard, the safety control system includes various types of devices, such as manually operated from the initial to the final position sensor or machine Mechanical actuating mechanism or components (such as motors) input terminal, such as a motor. The following safety control means for.

--- Start (see 5.2.3);

--- Normal stopping (see 5.2.4);

--- Interlock (see 5.3.7.3,5.3.7.4);

--- Brake (see 5.2.4,5.3.4); These control systems should be at least a "proven" to be elements and principles of design and manufacturing. Use 5.2.1.2 "proven" element This standard of "proven" and refers to the principle elements.

a) electrical components shall comply with the relevant national standards, industry standards, including the following components.

--- Forced disconnection control switches (for interlocking guard position sensor mechanically operated) and for auxiliary circuits Relay should meet the requirements of GB 14048.5;

--- For electromechanical contactors and motor starters on the main circuit should meet the requirements of GB 14048.4;

--- Rubber insulated cables shall comply with GB/T 5013.1 of;

--- Fixed (for example, installed in the machine bed inside) PVC cable to prevent mechanical damage should be consistent with GB/T 5023.1 Provisions.

b) circuit in principle, should be consistent with the first four measures GB 5226.1-2008 prescribed in 9.4.2.1, the circuit should be hardwired. If the safety control system used in electronic components, it shall comply with GB 5226.1-2008 the requirements in 9.4.2.2.

c) mechanical components, for example, be used to force the mechanical action between parts, should be consistent with GB/T 15706-2012 in

6.2.5 requirements.

d) protection device, such as a position sensor mechanically operated forced role model, and connections as well as its arrangement and cam design Installation should comply with GB/T 5023.1-2008

5.3 Protection of mechanical hazards

5.3.1 Stability Measures should be fixed to the ground on the machine, such as a hole in the machine base. Stability of the machine should comply with GB 20179-2006 Appendix A requirements. If you move the machine using lifting equipment, lifting should be equipped with facilities such as rings. These facilities can be properly positioned center of gravity of the machine. Installed wheel mobile machine, shall be provided to prevent the displacement of the machine during processing apparatus, such as providing or capable of wheels from the wheel brake Ground Collapse apparatus. Inspection method. check the corresponding pattern to check the machine and make the appropriate functional tests on the machine.

5.3.2 operation of fracture risk Guard cutter at least the following materials.

a) steel, tensile strength of not less than 350N/mm2, thickness of at least 1.5mm;

b) a light alloy, in accordance with Table 2;

c) polycarbonate, a thickness of not less than 3mm; or other plastic material, impact strength not less than 3mm thick polycarbonate anti Impact strength. Inspection method. check the corresponding pattern, measuring, checking the machine. Table

5.3.3 Structure of tool and toolholder

5.3.3.1 blade design Should not be installed on the machine tool is greater than the maximum design diameter. Saw shaft tolerance should be consistent with GB/T 14303-2008 requirements in G12 and G13. Inspection method. check the corresponding pattern to check the machine and make the appropriate functional tests on the machine.

5.3.3.2 Spindle locking If the tool change is necessary to lock the spindle, spindle lock device shall be provided. Adopt double wrench, the operator can also be inserted in the spindle lock Given rod. When the locking rod, the smallest diameter of the rod to 8mm, and it shall be not less than the tensile strength of steel 350N/mm2 of. When the spindle motor is turned on accidentally, the locking bars shall prevent the spindle. Inspection method. check the corresponding drawings and/or circuit diagrams, measurement, inspection, and the lock bar manufacturer's warranty, and on the machine accordingly Function test. But can also by the following test. when the locking device which is activated to start the spindle motor, the spindle still remains stationary.

5.3.3.3 blade locking device (The paperback or a saw blade flange) should provide two blade flanges. When the saw blade diameter is less than or equal to 450mm, two flanges (paperback or as a blade flange) diameter of at least 4mm (Where. D is the largest design diameter of the saw blade). When the blade diameter is greater than 450mm, two flanges (paperback or as a blade flange) diameter of at least 6mm ,but not Can be greater than 115mm. Flange (non Paperback blade) external gripping surfaces of at least 5mm, and concave (see Figure 8). If offers two flanges, it should not exceed the difference between the outer diameter of 1mm. Starting, running, coasting or braking, should the blade against rotation, for example by sawing blade shaft and forced coupling, or by the former French Flanges and saw forced coupling shaft to achieve.

Inspection method. check the corresponding drawings and/or circuit diagrams, inspection and machine tools for functional testing on the machine.

5.3.4 Brake When not brake coasting time exceeds 10s, should set an automatic brake cutter shaft. Brake time should be less than 10s. For electrical braking system, do not use the reverse current brake. Inspection method. test required by GB 12557-2010

5.3.4.3 do not brake coasting time, starting time And braking time.

5.3.5 The projectile to minimize the likelihood and impact device When the machine circular saws for manual feeding mode, the riving knife should be installed. Riving knife size should be specified in the instructions of the machine Blade size range to adapt. Inspection method. check the corresponding pattern to check the machine. Riving knife and its installation should meet the following requirements.

a) riving knife should not be less than the tensile strength of 580N/mm2 steel or equivalent material, on both sides should be flat (straight line Degree in 100mm measuring length 0.1mm), its width should be between the saw body width and zigzag width (see Figure 9). Inspection method. check the corresponding pattern, measure and check guarantee tensile strength machine and materials provided by the manufacturer. Explanation. e

--- riving knife thickness; B

--- sawing width; b

--- blade thickness.

9 appropriate riving knife and saw blade thickness map size

b) edge of the riving knife should be wedge-shaped in order to import (see Figure 10). Riving knife thickness over the entire length to be consistent, and its tolerance 0.05mm. Inspection method. check the relevant drawings, inspection, measurement tools. The leading edge of the wedge riving knife 10

c) the riving knife should be able to be adjusted vertically, in accordance with this standard requires the installation, the top of the riving knife shall not be lower than the highest point on the circumference of the saw blade (See FIG. 11). Inspection method. check the relevant drawings, inspection, measurement tools. twenty one 11 height adjustment of the riving knife